ON THE DETERMINATION OF LOW PU CONTENT IN THE ENVIRONMENT

被引：8

作者：

PERELYGIN, VP

CHUBURKOV, YT

机构：

[1] Joint Institute for Nuclear Research

来源：

NUCLEAR TRACKS AND RADIATION MEASUREMENTS | 1993年 / 22卷 / 1-4期

关键词：

PU-239 EXPLORATION IN ENVIRONMENT; INDUCED FISSION; PLASTIC TRACK DETECTORS;

D O I：

10.1016/0969-8078(93)90197-C

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The method of Pu-239 minor content determination in the soil, water, air, living species is developed. It is based on chemical extraction of plutonium from the specimens. The Pu-236 alpha-active tracer was used to control the chemical yield of Pu from samples. The layers with Pu were put in contact with polyterephtalate and irradiated with thermal neutron fluences approximately 10(15) cm-2 together with calibrated U and P ethalons. The Pu content in soils from North Ukraina region was 310(-12) - 1.210(-13) g/g. To check the possible Th-U minor admixtures of U and Th in Pu fractions, the control experiments with 23 MeV gamma-rays were carried out. It provides an upper limit of admixture of these nuclei at the level of less-than-or-equal-to 10(8) per sample.

引用

页码：869 / 872

页数：4